{"id":5453,"date":"2020-07-27T14:56:46","date_gmt":"2020-07-27T05:56:46","guid":{"rendered":"https:\/\/www.waseda.jp\/fsci\/wise\/?p=5453"},"modified":"2021-04-12T09:51:35","modified_gmt":"2021-04-12T00:51:35","slug":"%e3%82%ab%e3%83%bc%e3%83%9c%e3%83%b3%e3%83%8a%e3%83%8e%e3%83%81%e3%83%a5%e3%83%bc%e3%83%96%e3%81%ae%e3%83%aa%e3%83%81%e3%82%a6%e3%83%a0%e3%82%a4%e3%82%aa%e3%83%b3%e9%9b%bb%e6%b1%a0%e3%81%ae%e9%9b%bb-2","status":"publish","type":"post","link":"https:\/\/www.waseda.jp\/fsci\/wise\/prj\/2020\/07\/27\/5453\/","title":{"rendered":"\u9577\u5c3a\u30ab\u30fc\u30dc\u30f3\u30ca\u30ce\u30c1\u30e5\u30fc\u30d6\u306e\u5408\u6210\u3068\u30ea\u30c1\u30a6\u30e0-\u786b\u9ec4\u96fb\u6c60\u3078\u306e\u5fdc\u7528"},"content":{"rendered":"

Carbon nanotube (CNT)\u00a0<\/span>is\u00a0<\/span>an<\/span>\u00a0<\/span>important<\/span>\u00a0<\/span>allo<\/span>trope of\u00a0<\/span>low-dimension<\/span>al<\/span>\u00a0carbon materials.\u00a0<\/span>CNTs<\/span>\u00a0<\/span>exhibit<\/span>\u00a0a series of<\/span>\u00a0intriguing structure-dependent<\/span>\u00a0features tha<\/span>t\u00a0<\/span>render<\/span>\u00a0them gr<\/span>eat promise for\u00a0<\/span>electronic<\/span>\u00a0devices<\/span>.<\/span>\u00a0<\/span>Through decades of research,\u00a0<\/span>mass production of CNTs\u00a0<\/span>has been consider<\/span>ed as one of the main obstacles for\u00a0<\/span>their<\/span>\u00a0<\/span>industrial applications.<\/span>\u00a0<\/span>Among diverse approaches targeting their mass production, chemical vaper deposition (CVD) has been regarded as the most promising techniques for their production in commercial scale.<\/span>\u00a0In the past, our<\/span>\u00a0group have\u00a0<\/span>developed a\u00a0<\/span>fluidized-bed CVD\u00a0<\/span>(<\/span>FBCVD<\/span>)<\/span>\u00a0for the catalyst deposition on ceramic beads and e<\/span>stablished a semi-continuous production of sub-millimeter-long few-wall CNTs (FWCNTs)<\/span>.\u00a0<\/span>Although catalyst deposition using metalorganic vapors enabled quick and in-situ deposition of catalyst on the ceramic beads by FBCVD method, metalorganic precursors are not cheap<\/span>.<\/span>\u00a0<\/span>To f<\/span>urther decrease the\u00a0<\/span>p<\/span>roduction cost of CNTs,\u00a0<\/span>the\u00a0<\/span>research<\/span>\u00a0of developing\u00a0<\/span>facile\u00a0<\/span>catalyst\u00a0<\/span>preparation<\/span>\/deposition<\/span>\u00a0<\/span>method or\u00a0<\/span>using low cost\u00a0<\/span>catalyst\u00a0<\/span>precursor\u00a0<\/span>is<\/span>\u00a0<\/span>important<\/span>.<\/span>\u00a0<\/span><\/p>\n

Additionally<\/span>,<\/span>\u00a0CNTs\u00a0<\/span>have been studied extensively\u00a0<\/span>as the\u00a0<\/span>current collector of lithium-ion batteries<\/span>\u00a0<\/span>(LIBs)\u00a0<\/span>due to their\u00a0<\/span>ability to form self-organized\u00a0<\/span>high\u00a0<\/span>conductive<\/span>\u00a0<\/span>films<\/span>\u00a0and light weight.<\/span>\u00a0Among diverse LIBs using different active materials,\u00a0<\/span>l<\/span>ithium-sulfur (Li-S) batteries are\u00a0<\/span>regarded as a<\/span>\u00a0promising candidate for next-generation\u00a0<\/span>energy-storage systems<\/span>\u00a0due to their high energy densities, lo<\/span>w cost and natural abundance of\u00a0<\/span>sulfur<\/span>.\u00a0<\/span>However<\/span>, the practical applications of Li-S batteries are impeded by the low conductivity of sulfur, shuttling effect of soluble\u00a0<\/span>poly<\/span>sulfide intermediates and large volume changes.\u00a0<\/span>Therefore,\u00a0<\/span>the fabrication<\/span>\u00a0of three-dimensional CNT current collector<\/span>s<\/span>\u00a0<\/span>and\u00a0<\/span>hybridized sulfur and CNT composite electrode\u00a0<\/span>would be a promising solution method<\/span>.\u00a0<\/span>\u00a0<\/span><\/p>\n

In this research,\u00a0<\/span>the purpose is\u00a0<\/span>to\u00a0<\/span>(A)\u00a0<\/span>optimize the synthesis condition of SWCNTs<\/span>\u00a0using unsaturated hydrocarbon as carbon source<\/span>\u00a0in FBCVD reactor<\/span>,<\/span>\u00a0(B)<\/span>\u00a0<\/span>develop<\/span>\u00a0<\/span>facile\u00a0<\/span>and\u00a0<\/span>stable<\/span>\u00a0metalorganic\u00a0<\/span>catalyst\u00a0<\/span>precursor\u00a0<\/span>supply<\/span>\u00a0<\/span>method<\/span>\u00a0and\u00a0<\/span>synthesize FWCNTs both in FBCVD reactor<\/span>,\u00a0<\/span>and\u00a0<\/span>(C)<\/span>\u00a0<\/span>fabricate\u00a0<\/span>hybridized sulfur and\u00a0<\/span>CNT<\/span>\u00a0<\/span>(<\/span>S-<\/span>CNT)\u00a0<\/span>composite cathodes\u00a0<\/span>possessing<\/span>\u00a0<\/span>high sulfur content\u00a0( >70\u00a0wt%)<\/span>\u00a0using\u00a0<\/span>t<\/span>he as-produced CNTs<\/span>.<\/span>\u00a0<\/span><\/p>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

Carbon nanotube (CNT)\u00a0is\u00a0an\u00a0important\u00a0allotrope of\u00a0low-dimensional\u00a0carbon materials.\u00a0CNTs\u00a0exhibit\u00a0a series of\u00a0 […]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[109],"tags":[],"class_list":["post-5453","post","type-post","status-publish","format-standard","hentry","category-prj","lang-ja","sr-science"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.waseda.jp\/fsci\/wise\/wp-json\/wp\/v2\/posts\/5453","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.waseda.jp\/fsci\/wise\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.waseda.jp\/fsci\/wise\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.waseda.jp\/fsci\/wise\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/www.waseda.jp\/fsci\/wise\/wp-json\/wp\/v2\/comments?post=5453"}],"version-history":[{"count":4,"href":"https:\/\/www.waseda.jp\/fsci\/wise\/wp-json\/wp\/v2\/posts\/5453\/revisions"}],"predecessor-version":[{"id":6228,"href":"https:\/\/www.waseda.jp\/fsci\/wise\/wp-json\/wp\/v2\/posts\/5453\/revisions\/6228"}],"wp:attachment":[{"href":"https:\/\/www.waseda.jp\/fsci\/wise\/wp-json\/wp\/v2\/media?parent=5453"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.waseda.jp\/fsci\/wise\/wp-json\/wp\/v2\/categories?post=5453"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.waseda.jp\/fsci\/wise\/wp-json\/wp\/v2\/tags?post=5453"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}